31 citations · 86 across the 11 of their papers we have counts for
12 papers
Enhanced Quantum Metrology via Saddle-Point Scrambling in Phase Space
Lei Shao, Hai-Jun Xing, Libin Fu
Nonlinear effects are widely utilized in quantum metrology to enhance measurement precision by leveraging complex dynamical behaviors. Here, we propose a quantum scrambling-integra…
Spin squeezing generated by the anisotropic central spin model
Lei Shao, Libin Fu
Spin squeezing, as a crucial quantum resource, plays a pivotal role in quantum metrology, enabling us to achieve high-precision parameter estimation schemes. Here we investigate th…
Relations between quantum metrology and criticality in general su(1, 1) systems
Rui Zhang, Wenkui Ding, Zhucheng Zhang +3
There is a prevalent effort to achieve quantum-enhanced metrology using criticality. However, the extent to which estimation precision is enhanced through criticality still needs f…
Advantage of quantum coherence in postselected metrology
Shao-Jie Xiong, Peng-Fei Wei, Huang-Qiu-Chen Wang +5
In conventional measurement, to reach the greatest accuracy of parameter estimation, all samples must be measured since each independent sample contains the same quantum Fisher inf…
Instantaneous indirect measurement principle in quantum mechanics
Wangjun Lu, Xingyu Zhang, Lei Shao +6
In quantum systems, the measurement of operators and the measurement of the quantum states of the system are very challenging tasks. In this Letter, we propose a method to obtain t…
Quantum phase transition in XXZ central spin model
Lei Shao, Rui Zhang, Wangjun Lu +2
We investigate the quantum phase transition (QPT) in the XXZ central spin model, which can be described as a spin-1/2 particle coupled to N bath spins. In general, the QPT is suppo…
All-optical generation of deterministic squeezed Schrödinger-cat states
Zhucheng Zhang, Lei Shao, Wangjun Lu +1
Quantum states are important resources and their preparations are essential prerequisites to all quantum technologies. However, they are extremely fragile due to the inevitable dis…
Verification of colorable hypergraph states with stabilizer test
Hong Tao, Xiaoqian Zhang, Lei Shao +1
Many-body quantum states, as a matter of fact, are extremely essential to solve certain mathematical problems or simulate quantum systems in measurement-based quantum computation.…
Extreme expected values and their applications in quantum information processing
Wangjun Lu, Lei Shao, Xingyu Zhang +4
We consider the probability distribution when the monotonic function of the independent variable takes the maximum or minimum expected value under the two constraints of…
Single-photon-triggered spin squeezing with decoherence reduction in optomechanics via phase matching
Zhucheng Zhang, Lei Shao, Wangjun Lu +4
Quantum spin squeezing is an important resource for quantum information processing, but its squeezing degree is not easy to preserve in an open system with decoherence. Here, we pr…
Optimal quantum phase estimation in an atomic gyroscope based on Bose-Hubbard model
Lei Shao, Weiyao Li, Xiaoguang Wang
We investigate the optimal quantum state for an atomic gyroscope based on a three-site Bose-Hubbard model. In previous studies, various states such as the uncorrelated state, the B…
Charging of quantum batteries with general harmonic power
Jie Chen, Liyao Zhan, Lei Shao +3
We analyse the charging process of quantum batteries with general harmonic power. To describe the charge efficiency, we introduce the charge saturation and the charging power, and…